Doctor explains the challenges of vaccinating the American population

Doctors are urging Americans to get the coronavirus vaccine. Dr. Ruth Karron, the director of the Center for Immunization Research at Johns Hopkins University, joins CBSN’s Lana Zak to answer questions about the COVID-19 vaccine and its efficacy. She also discusses the differences between the new strains overseas and how much of a concern they are.

Source: CBS, Doctor explains the challenges of vaccinating the American population